Datasheet

ManualsBrandsSTMICROELECTRONICS ManualsVoltage RegulatorsVoltage Regulators / Switching Regulators

1/15September 2004

■ OUTPUT VOLTAGE RANGE: 1.2 TO 37V

■ OUTPUT CURRENT IN EXCESS OF 1.5A

■ 0.1% LINE AND LOAD REGULATION

■ FLOATING OPERATION FOR HIGH

VOLTAGES

■ COMPLETE SERIES OF PROTECTIONS:

CURRENT LIMITING, THERMAL

SHUTDOWN AND SOA CONTROL

DESCRIPTION

The LM117/LM217/LM317 are monolithic

integrated circuit in TO-220, TO-220FP, TO-3 and

PAK packages intended for use as positive

adjustable voltage regulators.

They are designed to supply more than 1.5A of

load current with an output voltage adjustable over

a 1.2 to 37V range.

The nominal output voltage is selected by means

of only a resistive divider, making the device

exceptionally easy to use and eliminating the

stocking of many fixed regulators.

LM117/217

LM317

1.2V TO 37V VOLTAGE REGULATOR

Figure 1: Schematic Diagram

TO-220

PAK

TO-220FP

TO-3

Rev. 10

Summary of content (15 pages)

PAGE 1
LM117/217 LM317 1.2V TO 37V VOLTAGE REGULATOR ■ ■ ■ ■ ■ OUTPUT VOLTAGE RANGE: 1.2 TO 37V OUTPUT CURRENT IN EXCESS OF 1.5A 0.1% LINE AND LOAD REGULATION FLOATING OPERATION FOR HIGH VOLTAGES COMPLETE SERIES OF PROTECTIONS: CURRENT LIMITING, THERMAL SHUTDOWN AND SOA CONTROL DESCRIPTION The LM117/LM217/LM317 are monolithic integrated circuit in TO-220, TO-220FP, TO-3 and D2PAK packages intended for use as positive adjustable voltage regulators. They are designed to supply more than 1.
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LM117/217/317 Table 1: Absolute Maximum Ratings Symbol VI - VO IO Parameter Value Input-Reference Differential Voltage Unit 40 Output Current V Internally Limited Operating Junction Temperature for: Top Ptot Power Dissipation Tstg Storage Temperature LM117 LM217 LM317 -55 to 150 -25 to 150 0 to 125 °C Internally Limited -65 to 150 °C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
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LM117/217/317 Figure 3: Basic Adjustable Regulator Table 4: Electrical Characteristics For LM117/LM217 (VI - VO = 5 V, IO = 500 mA, IMAX = 1.5 A and PMAX = 20 W, TJ = -55 to 150°C for LM117, TJ = -25 to 150°C for LM217, unless otherwise specified). Symbol Parameter Test Conditions Min. Typ. Max. Unit ∆VO Line Regulation VI - VO = 3 to 40 V TJ = 25°C 0.01 0.02 %/V ∆VO Load Regulation VO ≤ 5 V IO = 10 mA to IMAX TJ = 25°C 0.02 5 0.05 15 mV VO ≥ 5 V IO = 10 mA to IMAX TJ = 25°C 20 0.
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LM117/217/317 Table 5: Electrical Characteristics For LM317 (VI - VO = 5 V, IO = 500 mA, IMAX = 1.5 A and PMAX = 20 W, TJ = 0 to 125°C, unless otherwise specified). Symbol ∆VO ∆VO Parameter Line Regulation Load Regulation IADJ Adjustment Pin Current ∆IADJ Adjustment Pin Current VREF Reference Voltage (between pin 3 and pin 1) Test Conditions VI - VO = 3 to 40 V Min. 0.01 0.04 %/V VO ≤ 5 V IO = 10 mA to IMAX TJ = 25°C 0.07 25 mV VO ≥ 5 V IO = 10 mA to IMAX TJ = 25°C 20 0.1 70 0.5 % 0.
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LM117/217/317 Figure 6: Reference Voltage vs Junction Figure 7: Basic Adjustable Regulator APPLICATION INFORMATION The LM117/217/317 provides an internal reference voltage of 1.25V between the output and adjustments terminals. This is used to set a constant current flow across an external resistor divider (see fig. 4), giving an output voltage VO of: VO = VREF (1 + R2/R1) + IADJ R2 The device was designed to minimize the term IADJ (100µA max) and to maintain it very constant with line and load changes.
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LM117/217/317 Figure 8: Voltage Regulator with Protection Diodes D1 protect the device against input short circuit, while D2 protects against output short circuit for capacitors discharging. Figure 9: Slow Turn-on 15V Regulator Figure 10: Current Regulator Vref 1.
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LM117/217/317 Figure 11: 5V Electronic Shut-down Regulator Figure 12: Digitally Selected Outputs (R2 sets maximum VO) Figure 13: Battery Charger (12V) * RS sets output impedance of charger ZO = RS (1 + R2/R1). Use of RS allows low charging rates whit fully charged battery.
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LM117/217/317 Figure 14: Current Limited 6V Charger * R3 sets peak current (0.6A for 1 0).
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LM117/217/317 TO-3 MECHANICAL DATA mm. DIM. MIN. A inch TYP MAX. MIN. TYP. 11.85 B 0.96 MAX. 0.466 1.05 1.10 0.037 0.041 0.043 C 1.70 0.066 D 8.7 0.342 E 20.0 0.787 G 10.9 0.429 N 16.9 0.665 P 26.2 R 3.88 1.031 4.09 U 0.152 39.5 V 1.555 30.10 1.185 A P D C O N B V E G U 0.
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LM117/217/317 TO-220 MECHANICAL DATA DIM. mm. MIN. TYP inch MAX. MIN. TYP. MAX. A 4.40 4.60 0.173 0.181 C 1.23 1.32 0.048 0.051 D 2.40 2.72 0.094 0.107 D1 1.27 0.050 E 0.49 0.70 0.019 0.027 F 0.61 0.88 0.024 0.034 F1 1.14 1.70 0.044 0.067 F2 1.14 1.70 0.044 0.067 G 4.95 5.15 0.194 0.203 G1 2.4 2.7 0.094 0.106 H2 10.0 10.40 0.393 0.409 L2 16.4 0.645 L4 13.0 14.0 0.511 0.551 L5 2.65 2.95 0.104 0.116 L6 15.25 15.75 0.600 0.
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LM117/217/317 TO-220FP MECHANICAL DATA mm. DIM. MIN. TYP inch MAX. MIN. TYP. MAX. A 4.40 4.60 0.173 0.181 B 2.5 2.7 0.098 0.106 D 2.5 2.75 0.098 0.108 E 0.45 0.70 0.017 0.027 F 0.75 1 0.030 0.039 F1 1.15 1.50 0.045 0.059 F2 1.15 1.50 0.045 0.059 G 4.95 5.2 0.194 0.204 G1 2.4 2.7 0.094 0.106 H 10.0 10.40 0.393 L2 L3 16 0.409 0.630 28.6 30.6 1.126 1.204 L4 9.8 10.6 0.385 0.417 L5 2.9 3.6 0.114 0.142 L6 15.9 16.4 0.626 0.
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LM117/217/317 D2PAK MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. MIN. TYP. MAX. A 4.4 4.6 0.173 0.181 A1 2.49 2.69 0.098 0.106 A2 0.03 0.23 0.001 0.009 B 0.7 0.93 0.027 0.036 B2 1.14 1.7 0.044 0.067 C 0.45 0.6 0.017 0.023 C2 1.23 1.36 0.048 0.053 D 8.95 9.35 0.352 0.368 10.4 0.393 4.88 5.28 0.192 D1 E 8 10 E1 G 0.315 8.5 0.409 0.335 0.208 L 15 15.85 0.590 0.624 L2 1.27 1.4 0.050 0.055 L3 1.4 1.75 0.055 0.068 M 2.4 3.2 0.
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LM117/217/317 Tape & Reel D2PAK-P 2PAK-D 2PAK/A-P 2PAK/A MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. 180 13.0 7.086 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 MAX. 0.504 0.512 14.4 0.519 0.567 Ao 10.50 10.6 10.70 0.413 0.417 0.421 Bo 15.70 15.80 15.90 0.618 0.622 0.626 Ko 4.80 4.90 5.00 0.189 0.193 0.197 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 11.9 12.0 12.1 0.468 0.472 0.
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LM117/217/317 Table 6: Revision History Date Revision 01-Sep-2004 10 14/15 Description of Changes Mistake VREF ==> VO, tables 1, 4 and 5.
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LM117/217/317 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice.